Expose metadata in a way that Zotero can read, so Dublin Core and Open
Graph are an easy way. No so easy, but still.
The language attribute of the html tag has been correctly set.
In the process, the date test has been improved.
Closes#3
Co-Authored-by: Igor Milhit <igor@milhit.ch>
Most of blog posts have the lastmod displayed even if the publishdate is
the same day, because lastmod comes from git information and has also
hour, minutes and second, and publishdate is set manually, with only
year, month and day.
* Formats the date to compare them accurately, with datFormat function.
* Styles a little bit the blockquote tag.
* Spaces evenly the post information blocks.
* Closes#5
Co-Authored-by: Igor Milhit <igor@milhit.ch>